SM -74-2 not booting

Discussion in 'Heidelberg Printing Presses' started by shabeer, May 18, 2020.

  1. shabeer

    shabeer Member

    Joined:
    Jun 2018
    Messages:
    5
    Location:
    united arab emirates
    Dear all,
    Kindly help me to find the issue of booting on my Heidelberg sm-74-2.
    I have seen only green LED is 'ON' on ewk boards during machine start up . And after few seconds the red led is always 'ON' on zsk board.
    Please could someone advice me about details of Red and green LED on EWK
     
  2. CHOCK

    CHOCK Senior Member

    Joined:
    Dec 2016
    Messages:
    1,400
    Location:
    Managua,Nicaragua
    Hi sir:
    Please make this test in ewk: connector
    X 31:
    pIN # 1: +15vDC
    2) pINs 2,3 +24Vdc motor
    3) pins 4,5 +5Vdc
    4) Pins 6 -15Vdc
    5) pIN 15 +24Vdc i/o grounds:
    6)Pins 7,16,8,9,10,11,12 Vdc motors

    Tolerance must be: +- 0.7% up or down. otherwise, repair or replace the complete electronic boards

    However First: clean very well !!!! all Edge connectors, and look for: colder+dry colder joints!!!!!!

    Blessing
     
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